- Add display abstraction with swappable backends (TerminalDisplay, NullDisplay)
- Separate C&C into RX/TX topics for serial-like communication
- Add StreamController with automatic ntfy topic warmup
- Add performance monitoring for render + display stages
- Update AGENTS.md and README.md with daemon/cmd operating procedures
- Add clean/clobber tasks to mise.toml
- Add tests for display, effects controller, and controller warmup
- Fix bug where /effects reorder command was unreachable
- Rewrite cmdline to send commands via ntfy and wait for response
- Add NtfyResponsePoller class for serial-port-like interface
- Add integration tests for ntfy topics (test read/write)
- Add NTFY_CC_TOPIC export to config
